Solution for what?A 20G not not even a big turbo.Plus with MAP based fueling you have to tune VE for every cell and everytime you change the VE of the engine you have to retune.MAF based fueling can account for VE changes somewhat without tuning.

I know its going back a ways, but I have had Braden over at XPT tuning helping me with my WRX for a little over a year now. I never would thought the things he's got my car doing were possible with a stock ECU. We've got the car running 19 psi with a vf39 on a 2.0L stock block on E85 ethanol now at about 11.8:1 compression, and its been more reliable than gas. I have never had any bad advise or bad map work from him. He knows his stuff when it comes to self-tuning.

Here's a link to his website if you're interested; XPT Tuning, The XPT Tuning Online Store
His name is Braden, and if you click on the contact us link it'll send an e-mail straight to him (ev8siv3@gmail.com) and he's usually back to you the same day, although he is out of town right now.

I know its going back a ways, but I have had Braden over at XPT tuning helping me with my WRX for a little over a year now. I never would thought the things he's got my car doing were possible with a stock ECU. We've got the car running 19 psi with a vf39 on a 2.0L stock block on E85 ethanol now at about 11.8:1 compression, and its been more reliable than gas. I have never had any bad advise or bad map work from him. He knows his stuff when it comes to self-tuning.

Here's a link to his website if you're interested; XPT Tuning, The XPT Tuning Online Store
His name is Braden, and if you click on the contact us link it'll send an e-mail straight to him (ev8siv3@gmail.com) and he's usually back to you the same day, although he is out of town right now.

Unless you have a lot of work done to that motor your compression ratio is 8:1. The STi has a stock compression ratio of 8.2:1.